| 350 Contra Costa | Website | Nonprofit | Walnut Creek |
| Alliance of Californians for Community Empowerment - Contra Costa | Website | Nonprofit | Richmond |
| Building Industry Association of the Bay Area | Website | Nonprofit | Walnut Creek |
| California State Assembly, 16th District | Website | State Government | San Ramon |
| CDPH Climate Change & Health Equity Program | Website | State Government | Richmond |
| Citizens for a Better Environment | Website | Nonprofit | Richmond |
| Citizens' Climate Lobby - Contra Costa | Website | Nonprofit | Lafayette |
| City of Clayton | Website | City Government | Clayton |
| City of Richmond | Website | City Government | Richmond |
| Communities for a Better Environment | Website | Nonprofit | Richmond |
| Contra Costa Climate Action Network | Website | Nonprofit | Lafayette |
| Contra Costa County | Website | County Government | Martinez |
| Contra Costa County Climate Leaders | Website | Nonprofit | Martinez |
| Contra Costa Health Services | Website | County Government | Martinez |
| Contra Costa Housing Authority | Website | County Government | Martinez |
| Contra Costa Water Resources | Website | County Government | Martinez |
| Crockett-Rodeo United to Defend the Environment | Website | Nonprofit | Rodeo |
| Earth Team | Website | Nonprofit | Richmond |
| Friends of Baxter Creek | | Nonprofit | El Cerrito |
| Friends of Garrity Creek | | Nonprofit | Richmond |
| Interfaith Climate Action Network of Contra Costa | Website | Nonprofit | Walnut Creek |
| Mt. Diablo Audubon Society | Website | Nonprofit | Walnut Creek |
| No Coal in Richmond | Website | Nonprofit | Richmond |
| Pt Molate Alliance | Website | Nonprofit | Richmond |
| Rodeo Citizens Association | Website | Nonprofit | Rodeo |
| San Francisco Estuary Institute | Website | Nonprofit | Richmond |
| St. Mary's College | Website | Academic: K-12 School | Moraga |
| Sunrise Movement - Contra Costa Hub | Website | Nonprofit | Danville |
| Sunrise Movement - San Ramon Hub | Website | Nonprofit | San Ramon |
| Sustainable Bay Area Network | Website | Network / Association / Coalition | Walnut Creek |
| Sustainable Contra Costa | Website | Nonprofit | Walnut Creek |
| Sustainable Danville Area | Website | Nonprofit | Danville |
| Sustainable Lafayette | Website | Nonprofit | Lafayette |
| Sustainable Moraga | Website | Nonprofit | Moraga |
| Sustainable Rossmoor | Website | Nonprofit | Walnut Creek |
| Sustainable San Ramon | Website | Nonprofit | San Ramon |
| Sustainable Walnut Creek | Website | Nonprofit | Walnut Creek |
| The Praxis Group | Website | Nonprofit | Martinez |
| The Watershed Project | Website | Nonprofit | Richmond |
| Urban Tilth | Website | Nonprofit | Richmond |